Model 7280 Wide-bandwidth DSP Lock-in amplifier

With direct digital demodulation over an operating frequency extending up to 2.0 MHz, output filter time constants down to 1 ms and a main ADC sampling rate of 7.5 MHz it is ideal for recovering fast changing signals. But unlike some other high frequency lock-ins, it also works in the traditional audio frequency band. The instrument includes the extended operating modes like dual reference, dual harmonic and virtual reference made popular by the 7260 and 7265, as well as the spectral display mode used to aid reference frequency selection. If you need a lock-in capable of working beyond the traditional audio frequency band but still want the drift-free performance that only digital demodulation brings, the 7280 is an ideal choice.